kraft



(No Model.) 2 Sheets-Sheet 1. J. U. KRAFT. MACHINE FOR EXTRAGTING BUNGS.

Patented June 21, 1892.

(No Model.) 2 Sheets-Shee t 2. J. U. KRAFT.

MACHINE FOR EXTRAUTING BUNG'S. No. 417,599. Patented June 21, 1892.

FEW

I I I Z;-

Unwrap STATES PATENT OFFICE,

JOHN U. KRAFT, OF MILWAUKEE, WISCONSIN, ASSIGNOR OF ONE-I-IALF TO HENRYRAVE, OF SAME PLACE.

- MACHINE FOR i-IXTRACTING BUNGS.

SPECIFICATION forming part of Letters Patent No. 477,599, dated June 21,1892. Application filed January 26, 1892. Serial No. 419,306. (Nomodel.)

To all whom it may concern:

Be it known that I, JOHN U. KRAFT, a citizen of the United States, and aresident of Milwaukee, in the county of Milwaukee, and in the State ofWisconsin, have invented certain new and useful Improvements in Machinesfor Extracting Bungs; and I do hereby declare that the following is afull, clear, and exact description thereof.

My invention relates to certain new and useful improvements in machinesfor extractin g bungs from barrels and kegs; and it consists in thematters hereinafter described, and pointed out in the appended claims.

The object of my invention is to provide a machine for this purposewhich may be operated by power to extract the bungs, the constructionbeing such that the said bungs after being extracted will beautomatically split and dropped from the extracting-tool.

The various features of my invention will be more fully hereinafterdescribed with reference to the accompanying drawings, in which- Figurel is a top plan view'of a machine constructed in accordance with myinvention. Fig. 2 is a vertical sectional view of the same,

.taken on line 2 2 of Fig. 1. Fig. 3 is a detail.

View of one of the parts. Figs. 4, 5, 6, and 7 representslightly-different forms of my improved device.

In said drawings, A represents a suitable frame, B a shaft carrying adriving-pulley O, and journaled in suitable bearings I)" B at oppositesides of the frame. Upon the inside of one of the bearings B B a collarB is.

secured to the shaft B, said collar being arranged to bear againsttheend of said hearing, so as to prevent outward movement of Upon theend of said shaft, outi said shaft. side of said bearing, is provided achuck or head D for holding a tool, to be hereinafter described, saidhead being arranged to bear against the outer end of said bearing so asto prevent inward movement of the shaft. This chuck or head is providedwith a central bore or socket cl, into which the shank of the tool isinserted and held by means of a set-screw cl.

The tool E comprises a sharppointed screwthreaded portion e at its outerend and a it is engaged and a hub G portion c gradually increasing indiameter from said screw-threaded portion and extending for aconsiderable distance therefrom, and upon its innerend a shank 6 adaptedto engage within the socket d in the chuck.

At suitable points upon the same side of the frame as that upon whichthe chuck or head D is located are provided outwardly-extending bracketsF F, each having at its outer end a suitable support G for a barrel orkeg. In the particular form of construction illustrated in Figs. 1 and 2of the drawings one of these supports G is made yielding by means of aspindle F upon the bracket with which on said support having a slidingengagement with said spindle and pressed outwardly by a spiral-spring fon said spindle.

A slot g is preferably provided in said hub and is arranged to movablyengage with a pin g, projecting from said spindle F, as shown. This pinserves to prevent rotary motion of said hub, with its support G aboutthe spindle without hindering the longitudinal motion of said hub andsupport. The other one of the supports is rigidly engaged with thebracket F, as shown, so as to rigidly support the end of the barrel orkeg which may be held against it.

In the form illustrated in Fig. 4 both of the supports G G areyieldingly supported upon spindles in the manner just described, one ofsaid supports being, however, arranged so as to have a greater range ofmotion than the other, while in Fig. 6 both of the supports areyieldingly supported upon the spindles and arranged to yield to an equalextent.

In the form illustrated in Fig. 5 both supports are made solid upon thebrackets, one of said brackets being made shorter than the other, so asto permit of an unequal yielding of the ends of the barrel before theyreach a bearing against said supports, While in Fig.

7 both of said supports are made solid, as be fore and of the samelength.

The operation of my improved device is as follows: The shaft B isconstantly revolved by power applied to the pulley C, so as to cause thechuck or head D to rotate constantly in a direction such as will causethe screw-threaded end of the toolE to enter the bung, which may be heldin contact with it.

When it is desired to extract a bung from a barrel or keg, said barrelor keg is held in a position to bring the bung against the point of thetool E, as shown by dotted lines in; Figs. 1 and 2. By the rotation ofsaid tool; its screw-threaded end is turned intothe bung, and thisoperation serves to draw the barrel or keg against the supports G G,when a continned rotation of said tool will operate to draw the bungfrom the bung-hole in an ob vious manner. The length of the bracketsrelative to the length of the tool is such that the said tool will beturned well into the bung 7 before the yielding motion of the barrel orkeg is stopped. The next bung that is extracted will-engage with the onealready on the tool,

and will obviously serve to crowd it farther onto said tool, and as theoperation of extracting the bungs is continued the bungs will besuccessively forced upon the tapered por-. tion of said tool, so as tocause them to split and fall off. Several of the bungs may be upon thetool at one time in the various stages of splitting and dropping off.

By the form of construction illustrated in; Figs. land 2, in which onlyone of the sup-f ports is permitted to yield and the other is madesolid, the ends of the barrel or kegl are givenan unequal yieldbeforecoming tof' a firm bearing, this unequal motion of the endsof thebarrel or keg operating to give a} side twist to the bung to more easilystart the f same. This operation is also obtained by the form ofconstruction illustrated in Fig. 4:, in which both supports arepermitted to yield,; but to an unequal extent. Similarly in the formillustrated in Fig. 5 by the arrangement o'f'the supports to projectfrom the frame to} an unequal extent, the motion of the-ends of thebarrel orkeg before coming into engagef ment with said supports isrendered unequal, andthe same object is attained.

In the forms illustrated in Figs. 6 and 7 the motion of the ends of thebarrel or keg are; rendered equaLand the bungs are extracted{ by astraight pull of the tool *By my improved apparatus the operation;- of'extractingbungs is very rapidly and salis-Z factorily performed, thenecessity of remov-l ing the bungs from the tool by hand being} entirelyobviated and the bungs being auto-l, matically split and dropped fromsaid tool without attention on the part of the operatorafter they havebeen extracted.

I would have it understood that I do not; desire to limit myself to theexact form orf forms of construction illustrated in the drawings andherein described, as various moditications may be made in the details ofeonstruction without departure from my invert tion, and any device ofthis nature which employs a tool screw-threaded at one end and adaptedto be turned into the bungs and with a portion of gradually-increasingdiameter, upon which said bungs are crowded, I would regard as comingwithin the scope of my original invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is-

1. A machine forextracting-"bungs, comprising a suitable frame providedupon one side with brackets carrying supports for opposite ends of thebarrels or kegs, a shaft journaled in said frame and carrying adriving-pulley, said shaft being arranged to project beyond the side ofthe frame between said brackets, and a screw-threadedtool secured totheouter end of said shaft and adapted to engage with the bungs to beextracted,substantially as set forth.

2. An apparatus for'extracting'bungs'from barrels and kegs, comprising asuitable frame, brackets extending from the side of the frame andprovided with supports for opposite ends of the barrels or kegs, a shaftjournaled in said frame and carrying a driving-pulley, said shaft beingarranged to project beyond the side of the frame between the said brack-'ets, and a tool secured to the outer endof said shaft and consisting ofa screw-threaded point,

and a tapered or frnstum -shaped portion gradually increasing indiameter from the termination of the screw-threaded portion of saidtool, substantially as set forth.

3. An apparatus for extracting bungs from barrels and kegs, comprisinga'suitable frame, brackets'extending therefrom and provided withsupports for opposite ends of the barrels or kegs, a shaft journaledin'said frame and carrying a driving-pulley, said shaftbeingarranged toproject beyond the side of'the'frame between the said brackets, a toolsecured to the outer end of said shaft andconsisting of a screw-threadedpoint, and a frustum shaped portion gradually increasing in diameterfrom the termination of'the screw-threaded portion,

the support for one end of the barrel being arranged to permit a greaterdegree of inward movement of said end than'the other, substantiallyasset forth.

In testimony that I claim the foregoing I have hereunto set my hand, atMilwaukee,in the county of Milwaukee and State of W iscousin, in thepresence of two witnesses.

JOHN 'U. KRAFT.

Witnesses:

JOHN E. WILEs, H. G. UNDERWOOD.

